Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Nomeie o cônjuge que se tornou consorte de Christian IX.
 ###Tabelas: CREATE TABLE vessels (vessels_id AUTO_INCREMENT PRIMARY KEY, Name VARCHAR, Built INT, Tonnage VARCHAR, Yard No. INT, History VARCHAR) CREATE TABLE westland_district (westland_district_id AUTO_INCREMENT PRIMARY KEY, Name VARCHAR, Years VARCHAR, Area VARCHAR, Authority VARCHAR, Decile INT, Roll INT) CREATE TABLE house_of_schleswig-holstein-sonderburg-glücksburg (house_of_schleswig-holstein-sonderburg-glücksburg_id AUTO_INCREMENT PRIMARY KEY, Name VARCHAR, Birth VARCHAR, Marriage VARCHAR, Became Consort VARCHAR, Ceased to be Consort VARCHAR, Spouse VARCHAR) CREATE TABLE chinese_professional_baseball_league (chinese_professional_baseball_league_id AUTO_INCREMENT PRIMARY KEY, Year INT, Winning team VARCHAR, Losing team VARCHAR, Score VARCHAR, Site VARCHAR) CREATE TABLE former_stations (former_stations_id AUTO_INCREMENT PRIMARY KEY, Station VARCHAR, Municipality VARCHAR, County VARCHAR, Former railroad VARCHAR, Closed INT)  
SELECT Became Consort FROM house_of_schleswig-holstein-sonderburg-glücksburg WHERE Spouse = christian ix